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说明：  DG方法求解先行问题 ux=f 二次基函数(use DG method to solve convection equation in 1D)

明华智能卡的上位机程序，可以给研发智能卡的用户带来方便-Minghua smart card PC procedures to be developed smart card is convenient for users

RSA,AES简单c++实现，可以完成加密解密功能，整数范围内，仅供学习(RSA encryption and decryption)

采用遗传算法进行多目标优化问题的求解，具体为两个目标优化问题(genetic algorithm solve multi-objective problem)

dxf格式cad文件的读取，解析,dxf格式cad文件的读取，解析,(Reading and parsing CAD files in DXF format)

说明：  EX4 to mql4 反编译软件，将EX4文件还原成MQL4 便于进行修改(the tool use for Ex4 to MQL4)

本书为学习正则表达式的入门和深入的参考书，浅显易懂，能满足工作所需。(This book is to learn regular expressions of entry and in-depth reference books, easy to understand, to meet the needs of the work.)

说明：  基于MATLAB的四旋翼无人机PD轨迹跟踪算法，能较好地实现轨迹跟踪(PD trajectory tracking algorithm of four rotor UAV Based on Matlab can achieve better trajectory tracking)

我们在整个游戏中，看到的所有内容，我们都理解为游戏对象。 那么每一个游戏对象，都是由一个单独的类创建而来。 为了便于我们程序的可扩展性，减少冗余代码，我们写一个父类，让这些游戏对象的子类 来继承我的父类，我在父类中，将子类中所共有的成员全部都封装起来。 应该记录游戏对象的横纵坐标 需要记录游戏对象的高度和宽度(All the content we see in the whole game is understood as the object of the game. Then every game object is created by a separate class. In order to facilitate the scalability of our program and reduce redundant code, we write a parent class to let the children of these game objects. To inherit my parent class, I encapsulate all the members that are common in the subclass. The abscissa and ordinate coordinates of the game object should be recorded You need to record the height and width of the game object)

黑客攻防实战技术完全手册：扫描、嗅探、入侵与防御(Technology is completely offensive and defensive combat hackers Manual: scanning, sniffing, and intrusion prevention)